Machine for manufacturing photographic dry-plates



(No Model.) 3 Sheets-Sheet 1. P. 0. & F. E. STANLEY.

MAGHINE FOR MANUFACTURING PHOTOGRAPHIU DRY PLATES.

WIT ssflsr i V TOELS':

N. PETERS, PhclQl-ilhognpher. Washington. D. C,

(No Model.) 3 Sheets-Sheet 2.

F. O. & F. E; STANLEY.

MAOHINE 30R MANUFACTURING PHOTOGRAPHIG DRY PLATES.

N0. 345,331. Patented July 13, 1886.

WIT WEE/7% (No Model.) 3iSheets-Sheet 3. A

P. 0. & P. E. STANLEY, MACHINE FOR MANUFACTURING PHOTOGRAPHIG DRYPLATES.

Patented July '13, 1886.

'UNITED STATES PATENT @FFICE.

FREELAN O. STANLEY, OF LEWISTON, AND FRANK E. STANLEY, OF AUBURN,

MAINE.

MACHINE FOR MANUFACTURING PHOTOGRAPHIC DRY-PLATES.

SPECIFICATION forming part of Letters Patent No. 345,331, dated July 13,1886.

Application filed August 27, 1885.

To all whom it may concern.-

Be it known that we, FREELAN O. STANLEY and FRANK E. STANLEY, citizensof the United States, of Lewiston and Auburn, respectively, in thecounty of Androscoggin and State of Maine, have invented a certain newand useful Machine for the Manufacturing of Photographic Dry-Plates, andcalled a Coating- Machine, and we do hereby declare that the followingisa full, clear, and exact description of the invention, which willenable others skilled in the artto which it appertains to make and usethe same, reference being had to the accompanying drawings, and toletters of reference marked thereon, which form a part of thisspecification.

Figure 1 represents a side view of part of the coating-machine, asection being taken out at a. A section is cut off at the right of theView in Fig. l. The continuation of Fig. 1 may be seen in Fig. 2. Figs.3 and 4 are top plans of Figs. 1 and 2, respectively. Fig. 5 is aperspective view of the device for the coating of the plate, and Fig. 6is a sectional view of Fig. 5.

Same letters show like parts.

Our invention relates to the manufacturing of photographic dry-plates.

Our improvements consist in the method of coating the glass plate, thesetting process or hardening of the coating after it is applied to theplate, and the method of securing uniformity of flow of the photographicemulsion upon the plate.

Power is communicated to the machine by belt to pulley at end of rollI).

Rolls 1), c, d, and e are connected by belt f, passing round them indirection indicated by arrow.

Power is communicated from pulley at end' of roll 6 to pulley g at endof drum-pulley h.

t i t i are cord or rope belts passing round grooved rolls k 70. Theserope belts may be placed nearer together or farther apart, as isnecessary to support the glass plate, which they carry along, and whichis placed upon them one after another and in immediate contact at thepoint j. These cord or rope belts take the direction indicated by arrow.

The glass plate Z, to be coated, is placed by the operator on the .cordbelts at the point j,

Serial No. 175,423. (No model.)

and by these cords carried along under the coater at the point m. Theprocess of coating will be described hereinafter. Immediately afterreceiving the coating the plate passes from the rope belts to the beltf, this latter being distant from the rope belts about onehalf inch. Theplate is now carried along by the belt to the point I), where a secondoperator removes the plate and sets it away to dry. The rope belts passthrough atank, a, of tepid water, and any emulsion upon the belts isthus washed oft.

Fig. 5 is the coater.

o 0 are the parallel sides of a frame, and are 6 held in place by theconnecting-rodsp and q. The rod q extends through the sides 0 0, and itsends serve as a shaft,resting in the bearings r,these bearings beingelevated above the rope belts. Through the sides 0 0 run a tube, 8, 0and a glass rod, t, the tube placed-directly above the rod and each incontact with the other their entirelength, as seen in Fig. 5. Thetubes,on its under side along its entirelength, on a line immediately atthe left of its point of contact with the glass rod t, as seen in Fig.

5, is punctured with a series of small holes, a, one of which is plainlyseen in Fig. 6. This tube 8 is also punctured on its upper side with A asmall hole at v. To this latter puncture is s fitted apeg, w, removableat pleasure. The glass rodt rests on the rope belts. or on the glassplates when the plate is being coated and carried along by the ropebelts. The photographic emulsion is introduced into the tube 8 $5 at thepoint at by means of additional flexible tubing, 7 connected with a jar,2, located near by.

To secure uniform flow of emulsion through flexible tube y, connectedwith the coater, this flexible tube 3 is connected with a jar, z, inwhich the height of the emulsion is regulated by an ordinary trap-valveasit (the emulsion) comes from a tank containing the stock solution. Asthe emulsion is introduced into the tube s,the peg w is removed, thatall air may escape. The air having been driven out, the peg w isreturned to its place. The emulsion thus introduced escapes through thepunctures before described, and overflows the glass rodt ICO on the sidenext to the belt f. The emulsion then flows downward over the glass rodtuntil it reaches the glass plate Z, which is being carried along by therope belts, and by capillary attraction the emulsion is then uniformlyspread over the glass plate. The belt f passes over tin rests orsupports a, which extend across the part uppermost of the machine fromside to side, as seen in Figs. 3 and 4. Their purpose is to keep levelthe belt f and the coated plate passing along, while the friction of thebelt is less than if passed over a plane surface.

1) represents a tank filled with ice-water, through which the belt fpasses, as seen at the pointd in Figs. 1 and 2. As the belt comes fromthe tank b and reaches the roll 6, whereitreceives the justcoated plate1, its (the belts) temperature is low. Itthen receives the plate,

and the temperature of the latter is thus lowered, and the coatingbegins to harden or set immediately, being fully set when it reaches thepoint I), where it is removed by the second operator.

What we claim as our invention, and desire to secure by Letters Patentof the.United States, is

1. In a machine for coating photographic plates, the combination of theperforated tube 8 and the glass rod t, placed in cont-act therewith,substantially as described.

2. In a machine for coating photographic plates, a belt saturated withice-water or other cold liquid for the purpose of chilling or settingthe emulsion, substantially as hereinbefore set forth.

In testimony that we claim the foregoing as our own we affix oursignatures in presence of 35 two witnesses.

FREELAN O. STANLEY. FRANK E. STANLEY.

Vitnesses:

JOHN E. MOORE, HENRY SALNIC.

